Spiral ground anchor



FIG. 1 is a perspective view of a spiral ground anchor showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG, 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an exploded perspective view of spiral ground anchor.

The broken lines in the drawings depict portions of the spiral ground anchor that form no part of the claimed design. 

CLAIM The ornamental design for a spiral ground anchor, as shown and described. 